The Fjords of Norway

When tourists visit Norway, the first thing they go visit is the Fjords. Fjords are long and narrow bodies of water reach far inland and are fairly deep. They are often set in a U-shaped valley with steep walls of rock stretching up on either side. Although Norway is famous for its Fjords, they can also be found in New Zealand, Chile, Canada, Greenland, and Alaska.

The fjords were formed by glaciers at the end of the last ice age through a process called glaciation. The glaciers moved through the area, carving deep valleys into the land; when the glaciers melted, the fjord were formed, creating the beautiful landmasses that can be seen today.

Some fjords also have coral reefs at the bottom that teem with plankton and sea anemones, these are called cold-water reefs and are often completely dark and under high amounts of pressure due to the depth of the water. Fjords like these also have rock islands called "Skerries".

https://www.nationalgeographic.org/encyclopedia/fjord/